Hypothesis fixation is defined as: Select one: a. The tendency to over plan, over build and over test, i. e. put a disproportionate amount of time into planning, building and testing. b. The tendency to overestimate what can be achieved using a particular tool due to a vested interest in the outcome c. The tendency to test a system with data that is sympathetic to the design of the system which results in data that confirms the integrity of it d. The tendency to focus on the definition hypotheses at cost of the development of the model e. The tendency to maintain an initial hypothesis even if model generated evidence proves it incorr

The idea that, for each pair of devices v and w, there’s a strict dichotomy between being “in range” or “out of range” is a simplified abstraction. more accurately, there’s a power decay function f (·) that specifies, for a pair of devices at distance δ, the signal strength f(δ) that they’ll be able to achieve on their wireless connection. (we’ll assume that f (δ) decreases with increasing δ.) we might want to build this into our notion of back-up sets as follows: among the k devices in the back-up set of v, there should be at least one that can be reached with very high signal strength, at least one other that can be reached with moderately high signal strength, and so forth. more concretely, we have values p1 ≥ p2 ≥ . . ≥ pk, so that if the back-up set for v consists of devices at distances d1≤d2≤≤dk, thenweshouldhavef(dj)≥pj foreachj. give an algorithm that determines whether it is possible to choose a back-up set for each device subject to this more detailed condition, still requiring that no device should appear in the back-up set of more than b other devices. again, the algorithm should output the back-up sets themselves, provided they can be found.\